Heating stove



2 sheets-sheer l Innen oz anozmu Aug. 13, 1929. G. G. scARBoRoUGHHEATING STOVE Filed July 2, 1928 Aug. 13, 1929.

G. G.v SCARBOROUGH HEATING s'TovFJ Filed -July 2, 1928 2 sheerssneem 2gnve'ntoz Patented Aug. 13, 1929.

UNITED STATES GEORGE G. SCARIBOROUGH, 0F GIRDLETREE, MARYLAND.

HEATING STOVE.

Application filed July 2, 1928. Serial No. 289,770.

My present invention-relates to improvements in heating stoves and isparticularly an improvement on the stoves shown in my prior U. S.Patents 1,343,645 and 1,500,725 heretofore granted to me. l

One object of the present invention is to provide improved means forsustaining the inner shell and the fuel magazine within the outer shell.

Another object is to provide improved means for insulating the fuelmagazine for a material portion of its length whereby the fuel in themagazine will .be protected against excessive heat before it passes intothe lire-box.

A further object is to separate the fuel magazine from the inner shellwhereby damage to the one will not require a renewal of bot-h whenmaking repairs, and

A still further object is to provide an improved construction of innershell and the means for supporting it in an elevated position above thefire-box.

With these, and other objects in view, the invention is illustrated inthe accompanying drawings, wherein,-

Fig. 1 shows a vertical longitudinal section through the complete stove.

Fig. 2 illustrates a vertical sectional detail to show the means forsupporting the inner shell and magazine from the upper rim-edge of thefire-box.

Fig. 3 shows a vertical sectional detail through the fire-box `andash-chamber to illustrate how the grate is supported.

Fig. 4 illustrates a cross-sectional detail through the stove,-thesection being taken on the line 4 4 of Fig. 1, and

Fig. 5 shows the stove in front elevation.

Referring to the drawings, the numeral 7 designates the ash-box which,in practice, is of a rectangular shape but has a circular opening in itstop with an up-turned annular flange 8 around said top-opening.

The ash-box is supported in an elevated position by suitable legs 9 andhas a hinged door 10 at the front side thereof by which I access mayreadily be had to the interior of the ash-box for the removal of ashes.

The upper or top wall of the ash-box is provided with a plurality ofdepending brackets 11 with inturned horizontal lower ends 12, which forma support for the grate 13.

The fire-box 14 comprises a tapered vertical shell having its lowersmaller end 15,

fitting snugly in the circular top opening of the ash-box with its outerside engaged by the tip-turned annular flange 8 and suitable bolts orfastenings 16, pass through the flange and fire-box Wall to rigidlysecure the two together.

The upper larger end 17 of the fire-box has an out-turned horizontalflange 18 which is annular, and which is provided with anupwardly-projecting bead or flange 19. An annular ledge 2O is alsoprovided on the upper edge of the fire-box at the inner side of therip-turned flange 19 for a purpose that will presently be explained.

On the top of the out-turned flange 18 of the fire-box, I seat the loweredge of an annular or cylindrical sheet-metal cylinder 21, said loweredge of the cylinder encircling the up-turned flange 19 and beingsecured thereto by suitable fastenings 22 which eX- tend horizontallythrough the flange 'and also through the cylinder-Wall.

A door 23 is provided in the outer cylinder 21, preferably, just abovethe top of the fire-box.

A cast-metal head or top 24 fits down on the sheet-metal cylinder 21 andis secured thereto by bolts 25. This head or top has a centralfilling-opening 26 around which there is a depending annular flange 27,and this latter flange is preferably provided with a small vent-port 28for a purpose that will presently be explained.

An annular up-standing bead or flange 29 is provided around thefilling-opening 26 of the top and a removable cover-plate 30 seats onthe bead and covers the opening.

At the rear, the head or top 24 has a flanged opening 31 with which thesmokepipe (not shown) will connect, to carry off smoke, gases andproducts of combustion which escape through the smoke-pipe to thechimney.

On the interior of the outer cylinder 21, I provide an inverted conicalreceptacle 32 which I preferably form from cast-metal with a centralopening 33 therein and having a horizontal ledge 34 at its upper sidearound said opening.

Secured to the inclined wall of this conical receptacle 32, are a seriesof downwardly and outwardly-inclined legs or feet 35, which latter seaton the annular ledge 20 of the fire-box at the inner side of the bead orflange 19.

The legs or feet 35, have inclined upper ends which seat against theunder inclined side of the conical receptacle and are detachably securedthereto by bolts 36 which are tapped into the receptacle-wall- Thisconstruction permits the removal of the legs and their replacement bynew ones Whenever renewal becomes necessary without renewing ticallywithin the outer cylinder 2l but is sufficiently smaller than the latterin diameter to provide an annular flue or space 39 all the way aroundbetween the two cylinders, which flue is completely open andunrestricted from the top to the bottom of the inner cylinder.

Inside of the inner cylinder 38, I provide an insulating cylinder 40whose lower end seats on the horizontal ledge 34 of the coni" calreceptacle around, but spaced from the central opening 33, and thisinsulating cylinder together with the cylinder 38, form an annularchamber in which a packing or filler of heat-retaining material 4l, suchas sand, may be placed.

A ring cover 42, is provided over the top of the cylinder 38.

A magazine cylinder 43, extends down through the insulating cylinder 40but is of sufliciently smaller diameter than the insulating cylinder toprovide an annular insulating space 44 between the said two cylinders.This magazine cylinder has its lower end projecting through the centralopening -33 of the conical receptacle and is provided with an annularcircumferential boss 45, which seats upon the horizontal ledge 34, ofsaid conical receptacle and by which itis supported.

The upper end of the magazine cylinder 43, telescopically lits withinthe depending annular' flange 27 around the central opening of the heador top.

It will be understood that the fuel for `fire will be fed into the topof the magazine cylinder 43 and will automatically feed out by gravityat the lower end of said cylinder as it is consumed at the bottom in thefirebox.

The heat from the burning fuel passes up beneath the cast-metal conical4receptacle and then up through the unrestricted annular flue 39 whereit will heat the walls of both the outer and inner sheet-metal cylinders21 and 38.

The hot products of combustion when passing up through the annular flue39 will also heat the filler 4l in the space between the inner cylinder38 and the insulating cylinder 40, thus storing up heat that will beeffective through radiation for a comparatively long time.

The insulating cylinder 40, provides the insulating space 44 around themagazine cylinder 43, and thus keeps that cylinder and the fuel thereincomparatively cool so the fuel will not be consumed too rapidly.

I have noted that frequently gas collects in the top of the fuelmagazine beneath the cover 30 and is liberated into a room when thecover is removed. By providing a small vent port 28 through the magazinecylinder wall, I find that the draft from the stack will allow the gasto pass off and thus avoid this annoyance.

Having described my invention, I claim zl. In a magazine stove thecombination with a {ire-box having a flat top edge with anupwardly-projecting flange around said flat top, of an outer cylinderattached to the outer side of said upwardly-projecting flange, a topover the outer cylinder, an inverted conical receptacle in the outercylinder and having a central opening with a horizontal ledge around theopening, legs attached to the inclined bottom of said conical receptacleand inclining outwardly and seating on the flat top of the lire-box atthe inner side of the said upwardly-projecting flange, a cylinderattached to the conical receptacle and extending vertically within butspaced from the outer cylinder and a cylindrical magazine extending downthrough the conical receptacle and having means to engage the horizontalledge on the said conical receptacle.

2. In a magazine stove the combination with a fire-box, of an outercylinder supported by and projecting above the tire-box, an innercylinder supported within the outer cylinder but spaced from the latter,amagazinc cylinder and an insulating cylinder interposed between themagazine cylinder and the inner cylinder and forming an annular spacebetween itself and the wall of the inner cylinder and a filling ofheat-retaining material in the space between the inner cylinder and theinsulating cylinder. y

In testimony whereof I affix my signature.

nis GEORGE GLMXk SGARBOROUGH.

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